Don,
I know the video is far from perfect and it is a little hard to see the numbers etc (I assume it is the one Oli links to at the bottom of his page).
The way it works is that the RPM bargraph is scaled according to the max RPM the engine is set to (set via the GSU/ECU). I use this number (f.ex 150.000 RPM) as the full "deflection" of the bargraph (100%). The RPM read from the ECU is then shown on the bargraph as well as a written value below the graph (so 75000 RPM would mean the bargraph would be at 50%). The THR to the right of the RPM bargraph has 100% throttle as the max in the bargraph. 0% is idle
The fuel flow seems to be pretty accurate on the V6 and V10 ECUs we have been testing on (P100RX's, P160SX, P180RX, P300RX, SPT10 and SPT15). It is of course not anywhere near 1% or so, JetCat claims 5 to 10% and this seems to match well what we have seen here
Hope this makes sense ?